CN106012525A - Super-hydrophobic modification method for polytetrafluoroethylene (PTTE) fibers applied to oily sewage treatment - Google Patents
Super-hydrophobic modification method for polytetrafluoroethylene (PTTE) fibers applied to oily sewage treatment Download PDFInfo
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- CN106012525A CN106012525A CN201610459479.4A CN201610459479A CN106012525A CN 106012525 A CN106012525 A CN 106012525A CN 201610459479 A CN201610459479 A CN 201610459479A CN 106012525 A CN106012525 A CN 106012525A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
- D06M14/08—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of synthetic origin
- D06M14/10—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of synthetic origin of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/22—Polymers or copolymers of halogenated mono-olefins
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
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Abstract
The invention belongs to the technical field of modification of materials and particularly relates to a super-hydrophobic modification method for polytetrafluoroethylene (PTTE) fibers applied to oily sewage treatment. The method comprises the steps as follows: first of all, PTTE is carbonized with an acid solution, so that a great number of micropores are distributed in surfaces of the fibers, the specific surface area of the fibers is increased, and the oil storage performance of the fibers is improved; next, a great number of silicon dioxide particles are precipitated on the surfaces of the fibers under hydrolysis of tetraethyl orthosilicate under an acid condition to increase the surface roughness of the fibers; finally, the fibers are subjected to graft modification with dodecyl methacrylate as a grafting monomer and in cooperation with an initiator and a sweller with a chemical grafting copolymerization technology, accordingly, surface energy of the fibers is greatly reduced, and the PTTE fibers are endowed with a super-hydrophobic property and an enhanced oleophylic property The PTTE fibers treated with the method have efficient industrial application value in treatment of oily sewage.
Description
Technical field
The present invention relates to technical field of material modification, the polytetrafluoroethylene fibre particularly relating to oily waste water treatment is super thin
Water method of modifying.
Background technology
Oil-containing industrial water complicated components, intractability are big, have researched and developed novel efficient adsorbing material
Cause the great attention of people.And the novel absorption material researched and developed around super-hydrophobicity and strong oil absorbency, though
So the oily matter in oil-polluted water is had the raising of certain absorption property, but the manufacturing process of complexity, high
Manufacturing cost and limited applicable elements greatly limit its application.On the contrary, with lower cost materials as matrix,
The modification that it is carried out 26S Proteasome Structure and Function, gives its super-hydrophobic and strong oil-wet performance, becomes already instantly for containing greasy dirt
Water processes the study hotspot of novel absorption material.
Teos hydrolysis reaction all can occur under the conditions of acidity or alkalescence, and acid or alkali are at this hydrolysis
In play catalytic action, determine hydrolysis reaction.Shallower using acid as catalyst reaction, produce easy to control, with
Time under mildly acidic conditions, teos hydrolysis separate out SiO2.Additionally, teos hydrolysis is exothermic process,
Can occur at ambient temperature, have ethanol to generate simultaneously, can suitably heat up to accelerate hydrolysis reaction, but
Temperature is unsuitable too high, when temperature is higher than ethyl alcohol boiling point, and reaction system is easily formed bumping.Meanwhile, tetraethyl orthosilicate is insoluble
Yu Shui, therefore hydrolysis needs to carry out in organic solvent, generally uses alcohols, esters etc., such as ethanol, different
Propanol or their mixture.
Graft copolymerization is a kind of polymer chemistry method of modifying, is to change the atom on macromolecular chain or atomic group
Kind and a kind of method of modifying of combination thereof.By graft copolymerization, change the chemical constitution of polymer macromolecule,
Can be by hydrophilic and oleophylic, acid and alkalescence, plasticity, elastomeric and mutual exclusive two kinds of chains
Paragraph key is connected together, thus improves the performance of material, gives its new performance.Wherein, chemical graft refers to utilizationization
Learning the i.e. decomposition of initiator of reagent and produce free radical, be combined generation activity grafting site with graft base, then grafted monomers is again
It is polymerized with grafting site, forms graft product.It is simple that grafting modification has technique, low to equipment and environmental requirement,
Modified stable performance, the advantage such as pollution-free, it is widely used in the graft modification of polymer.
Summary of the invention
The technical problem to be solved is to provide that a kind of excellent performance is reliable, the polytetrafluoro of technique simple and flexible
The method that vinyl fiber is super-hydrophobic.
For solving the problems referred to above, the polytetrafluoroethylene fibre being applied to oily waste water treatment of the present invention is super-hydrophobic
Method of modifying, comprises the following steps:
Step one: the polytetrafluoroethylene fibre after prerinse being processed is placed in the sulfuric acid solution of certain 20wt%-60wt%
In, constant temperature 1-2 hour at 60-70 DEG C, with deionized water rinsing after taking-up, and dry for standby in calorstat；
Step 2: fiber carbonization processes: with nitrogen as protection gas, in batch (-type) retort, be first warming up to
250-300 DEG C is incubated 10-20 minute, and then polytetrafluoroethylene fibre carries out carbonization process, controls carbonization time 30-
60 minutes, cooling down was taken out subsequently；
Step 3: the polytetrafluoroethylene fibre after carbonization being processed is placed in the aqueous isopropanol containing 50wt%-70wt%
Middle 10-30 minute, constant temperature drying was standby；
Step 4: first configuration teos hydrolysis solution, by volume tetraethyl orthosilicate: deionized water: 0.1
The dilute hydrochloric acid of mol/L: isopropanol=(1-1.5): (4-6): (1-2): (4-6) is first by tetraethyl orthosilicate and isopropanol
Add in deionized water and be stirred continuously, then dilute hydrochloric acid is added dropwise over wherein；Again by the polytetrafluoro of step 3 gained
Vinyl fiber is soaked in the teos hydrolysis solution of excess, after reacting 3-5 hour, obtains silicon dioxide granule and sinks
Fall polytetrafluoroethylene fibre, takes out, with deionized water rinsing 2-3 time；
Step 5: cause solution preparation: deionized water is pre-heated to 60-80 DEG C in thermostatic mixer, Xiang Qi
In be added dropwise over accounting for the initiator of ionized water quality 1%-5% and 0.5%-2% stabilizer, be stirred continuously, until shape
Uniformly emulsion；
Step 6: the silicon dioxide granule of step 4 gained is settled polytetrafluoroethylene fibre and is transferred to the initiation of excess
In solution, after 60-80 DEG C of constant temperature soaks 1-2 hour, account for initiation solution quality 3%-5% to causing solution adds
Alkyl methacrylate, under 150-200rpm rotating speed stirring reaction 3-6 hour；
Step 7: step 6 products therefrom is utilized dehydrated alcohol and deionized water rinsing successively, dries at calorstat
Dry, obtain modifying super hydrophobicity polytetrafluoroethylene fibre.
Fiber prerinse described in step one is processed as: first by polytetrafluoroethylene fibre at acetone soln and dehydrated alcohol
Solution soaks 2-3 hour, is then transferred to ultrasonic waves for cleaning 30-40 minute in deionized water, finally in calorstat
Dry 8-12 hour under the conditions of 50-60 DEG C.
Calorstat described in step one is dried temperature and is 50-60 DEG C, and drying time is 6-10 hour.
Calorstat drying time described in step 3 is 4-8 hour, dries temperature and is 50-60 DEG C.
Initiator described in step 5 is in benzoyl peroxide, dilauroyl peroxide, azodiisobutyronitrile
One；
Stabilizer described in step 5 is polyoxyethylene sorbitan monoleate and toluene.
Alkyl methacrylate described in step 6 is butyl methacrylate (BMA) or methacrylic acid
Ten diester (LMA).
Washing time described in step 7 is 3-4 time, and calorstat temperature is 50-60 DEG C, and drying time is 10-12
Hour.
Beneficial effect:
The invention provides a kind of polytetrafluoroethylene fibre method for modifying super hydrophobicity being applied to oily waste water treatment.First
First acid solution carries out carbonization process to politef (PTFE), makes fiber surface be distributed substantial amounts of micropore, to increase
Adding specific surface area and the oil storage performance of fiber, next utilizes tetraethyl orthosilicate hydrolyzed under acidic conditions to act on fiber surface
Precipitate substantial amounts of silicon dioxide granule, increase the roughness of fiber surface, finally combine chemical graft copolymerization technique, with
Alkyl methacrylate, as grafted monomers, coordinates initiator and sweller, fiber is carried out graft modification process,
Drop greatly low-fiber surface can, thus give that polytetrafluoroethylene fibre is super-hydrophobic and strengthening oil-wet behavior.The present invention
Described fiber method for modifying super hydrophobicity technique simple and flexible, lower cost for material avirulence, super-hydrophobic and strongly lipophilic
Can be reliable and stable, experimental facilities is required low.It is woven into fleece or fiber cloth in conjunction with last handling process, suitable
For processing the oil-polluted water of Various Complex, it is with a wide range of applications.
Accompanying drawing explanation
Fig. 1 is the process chart of polytetrafluoroethylene fibre modifying super hydrophobicity.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment 1: benzoyl peroxide causes, butyl methacrylate (BMA) grafting polytetrafluoroethylene fibre
Modifying super hydrophobicity.
Step one: weigh 250g polytetrafluoroethylene fibre, first it is carried out following cleaning treatment, remove poly-four
The original oily matter of fluorothene fiber surface and other impurity:
1 > it is soaked in successively in acetone soln (Chemical Reagent Co., Ltd., Sinopharm Group) and dehydrated alcohol each 2 hours；
2 > ultrasonic waves for cleaning 40 minutes in deionized water it are transferred to；
3 > cleaned polytetrafluoroethylene fibre is dried 8 hours under the conditions of 50 DEG C in calorstat, standby.
Polytetrafluoroethylene fibre after prerinse being processed is immersed in the sulfuric acid solution of 20%, constant temperature 1 at 70 DEG C
Hour, use deionized water rinsing 3 times after taking-up, and in calorstat, dry 8 hours at 50 DEG C.
Step 2: be placed in batch (-type) retort by step one gained polytetrafluoroethylene fibre, under nitrogen protection, rises
Temperature, to 270 DEG C and after keeping constant temperature 10 minutes, carries out carbonization process to polytetrafluoroethylene fibre, controls carbonization time 30
Minute, then cooling down is taken out standby；
Step 3: the polytetrafluoroethylene fibre after carbonization being processed is placed in containing 50%-70% isopropanol (traditional Chinese medicines group
Chemical reagent company limited) aqueous solution in soak after 30 minutes, 50 DEG C of constant temperature dryings 6 hours；
Step 4: the polytetrafluoroethylene fibre of step 3 gained is transferred to tetraethyl orthosilicate (traditional Chinese medicines group chemistry examination
Agent company limited), deionized water, dilute hydrochloric acid, isopropanol 1:4:1:4 by volume preparation teos hydrolysis molten
In liquid, after teos hydrolysis reacts 3 hours, fiber is taken out, repeatedly rinses with deionized water 3 times；
Step 5: the beaker being added with 1L deionized water is placed in thermostatic mixer and is heated to 70 DEG C, wherein
Drip 3% benzoyl peroxide (Chemical Reagent Co., Ltd., Sinopharm Group), polyoxyethylene sorbitan monoleate (the traditional Chinese medicines group of 1%
Chemical reagent company limited) and the toluene (Chemical Reagent Co., Ltd., Sinopharm Group) of 1%, 300rpm stirring at low speed
Mix homogeneously, obtains causing solution；
Step 6: the silicon dioxide granule of step 5 gained is settled polytetrafluoroethylene fibre in causing solution 70 DEG C
After constant temperature soaks 1 hour, to causing, solution adds 3% butyl methacrylate (BMA) (traditional Chinese medicines group chemistry
Reagent company limited), stirring reaction 3 hours under 150rpm rotating speed；
Step 7: the polytetrafluoroethylene fibre after modifying super hydrophobicity is successively with dehydrated alcohol and deionized water rinsing 4
Secondary, dry 10 hours for 50 DEG C in calorstat.
The butyl methacrylate super-hydrophobic polytetrafluoroethylene fibre surface that obtains with this understanding occurs a small amount of micro-
Hole, the SiO of fiber surface sedimentation2Particle is less, and the percent grafting to butyl methacrylate is only 8.3% simultaneously, and
This super-hydrophobic polytetrafluoroethylene fibre is compiled into fleece and is applied to the separation of oil-polluted water medium oil material, separation efficiency
It is only 69%.This is because sulfuric acid solution concentration used in carbonization process is low, cause fiber surface micropore quantity
Few.And teos hydrolysis occurs at weak acid environment, hydrolytic breakdown SiO out2Quantity is few.Meanwhile, cause
Agent benzoyl peroxide is long 70 DEG C of reaction temperature half-life, and decomposition of initiator speed is slow, causes initial stage polymerization speed
Rate is the slowest, and in polyreaction, undecomposed initiator remains in polymerizate.When butyl methacrylate introduces
After politef main chain, the side chain side ester group on politef main chain increases, but makes to define at material surface
Certain network structure, has slackened the affinity to oily matter, finally have impact on modified polytetrafluoroethylene fibre
Super-hydrophobic and strong oil-wet performance.
Embodiment 2: azodiisobutyronitrile causes, lauryl methacrylate (LMA) grafting fibrillated polytetrafluoroethylene
Dimension modifying super hydrophobicity.
After polytetrafluoroethylene fibre being carried out prerinse process described in embodiment 1, it is placed on the sulphuric acid of 60%
In solution, constant temperature 1 hour at 70 DEG C, use deionized water rinsing 3 times after taking-up, and in calorstat, at 50 DEG C
Dry 6 hours.In batch (-type) retort, polytetrafluoroethylene fibre is carried out at carbonization same as in Example 1 subsequently
Reason, gives fiber surface microcellular structure.
According to described in embodiment 1, polytetrafluoroethylene fibre is transferred to tetraethyl orthosilicate, deionized water, dilute hydrochloric acid,
In the teos hydrolysis solution of isopropanol 1:4:2:4 by volume preparation, treat that teos hydrolysis reacts 5 hours
After, fiber is taken out, repeatedly rinses with deionized water 3 times.
Described in embodiment 1, the beaker being added with 1L deionized water is placed in thermostatic mixer and is heated to
70 DEG C, drip wherein 4% azodiisobutyronitrile (Shanghai Aladdin biochemical technology limited company), 1% poly-
Pyrusussuriensis ester 80 and the toluene of 1%, 400rpm stirring at low speed mix homogeneously, obtain causing solution.Select the methyl of 3%
Dodecyl acrylate (Shanghai Aladdin biochemical technology limited company) is as grafted monomers, for identical weight
Polytetrafluoroethylene fibre modifying super hydrophobicity, wherein graft reaction condition and rear cleaning step are consistent with embodiment 1.
The percent grafting of the super-hydrophobic polytetrafluoroethylene fibre of lauryl methacrylate obtained with this understanding has carried
Height, is 9.7%, and fiber surface occurs in that substantial amounts of microcellular structure simultaneously, and specific surface area significantly increases, substantial amounts of SiO2
Particle covers at fiber surface.This polytetrafluoroethylene fibre is compiled into fleece and is applied to the medium oil material of oil-polluted water
Separating, separation efficiency is 76%.This is because sulfuric acid solution concentration used in carbonization process improves, cause fiber
Surface micropore quantity increases, and increases specific surface area and the oil storage performance of fiber.Chemical graft copolyreaction subsequently
Journey so that the side chain side ester group on politef main chain increases, and is remarkably reinforced the affinity interaction of oily matter.But
It is that tetraethyl orthosilicate is at strong sour environment hydrolysis, the SiO of decomposition precipitation excess2Particle, and it is deposited on fiber surface,
Hinder the fiber absorption to Oil in Sewage Water material.
Embodiment 3: azodiisobutyronitrile causes, lauryl methacrylate (LMA) grafting fibrillated polytetrafluoroethylene
Dimension modifying super hydrophobicity.
After polytetrafluoroethylene fibre being carried out prerinse process described in embodiment 1, it is placed on the sulphuric acid of 60%
In solution, constant temperature 1 hour at 70 DEG C, use deionized water rinsing 3 times after taking-up, and in calorstat, at 50 DEG C
Dry 6 hours.In batch (-type) retort, polytetrafluoroethylene fibre is carried out at carbonization same as in Example 1 subsequently
Reason, gives fiber surface microcellular structure.
According to described in embodiment 1, polytetrafluoroethylene fibre is transferred to tetraethyl orthosilicate, deionized water, dilute hydrochloric acid,
In the teos hydrolysis solution of isopropanol 1:4:1.2:4 by volume preparation, treat that teos hydrolysis reacts 3 little
Shi Hou, takes out fiber, repeatedly rinses with deionized water 3 times.
Described in embodiment 1, the beaker being added with 1L deionized water is placed in thermostatic mixer and is heated to
70 DEG C, dripping 4% azodiisobutyronitrile, the polyoxyethylene sorbitan monoleate of 1% and the toluene of 1% wherein, 400rpm low speed stirs
Mix mix homogeneously, obtain causing solution.The lauryl methacrylate of selection 3% is as grafted monomers, for identical
The polytetrafluoroethylene fibre modifying super hydrophobicity of weight, wherein graft reaction condition and rear cleaning step and embodiment 1 phase one
Cause.
The percent grafting of the super-hydrophobic polytetrafluoroethylene fibre of lauryl methacrylate obtained with this understanding substantially carries
Height, is 13.6%, and fiber surface occurs in that substantial amounts of microcellular structure simultaneously, and specific surface area significantly increases, appropriate SiO2
Particle is deposited on fiber surface.This polytetrafluoroethylene fibre is compiled into fleece and is applied to the medium oil material of oil-polluted water
Separating, separation efficiency is 87%.This is because sulfuric acid solution concentration used in carbonization process improves, cause fiber
Surface micropore quantity increases, and increases specific surface area and the oil storage performance of fiber.Tetraethyl orthosilicate subsequently is at middle strong acidity
Environment hydrolyzes, moderate control hydrolysis time, decomposes and separates out appropriate SiO2Particle, and it is deposited on fiber surface,
Be conducive to the fiber absorption to Oil in Sewage Water material.Finally, chemical graft copolyreaction process so that polytetrafluoroethyl-ne
Side chain side ester group on alkene main chain increases, and is remarkably reinforced the affinity interaction of oily matter.
Claims (7)
1. the polytetrafluoroethylene fibre method for modifying super hydrophobicity being applied to oily waste water treatment, it is characterised in that
Said method comprising the steps of:
Step one: the polytetrafluoroethylene fibre after prerinse being processed is placed in the sulfuric acid solution of 20wt%～60wt%
In, constant temperature 1～2 hours at 60～70 DEG C, with deionized water rinsing after taking-up, and dry standby in calorstat
With；
Step 2: fiber carbonization processes: with nitrogen as protection gas, in batch (-type) retort, first heat up
It is incubated 10-20 minute to 250-300 DEG C, then the polytetrafluoroethylene fibre of step one is carried out carbonization process,
Controlling carbonization time 30-60 minute, cooling down is taken out subsequently；
Step 3: the isopropanol that the polytetrafluoroethylene fibre after carbonization being processed is placed in containing 50wt%-70wt% is molten
In liquid 10-30 minute, constant temperature drying was standby；
Step 4: first configuration teos hydrolysis solution, by volume tetraethyl orthosilicate: deionized water: 0.1
The dilute hydrochloric acid of mol/L: isopropanol=(1-1.5): (4-6): (1-2): the ratio of (4-6), first by positive silicon
Acetoacetic ester and isopropanol add in deionized water and are stirred continuously, then are added dropwise over wherein by dilute hydrochloric acid；Then
The polytetrafluoroethylene fibre of step 3 gained is soaked in the teos hydrolysis solution of excess, reacts 3-5
After hour, obtain silicon dioxide granule sedimentation polytetrafluoroethylene fibre, take out, with deionized water rinsing 2-3 time；
Step 5: preparation causes solution: deionized water is pre-heated in thermostatic mixer 60-80 DEG C, to
Be added dropwise in deionized water accounting for the initiator of ionized water quality 1%-5% and 0.5%-2% stabilizer, no
Disconnected stirring, until forming uniform emulsion；
Step 6: the silicon dioxide granule of step 4 gained is settled polytetrafluoroethylene fibre and is transferred to drawing of excess
Send out in solution, after 60-80 DEG C of constant temperature soaks 1-2 hour, account for initiation solution quality to causing solution adds
The alkyl methacrylate of 3%-5%, stirring reaction 3-6 hour under 150-200rpm rotating speed；
Step 7: step 6 products therefrom is utilized dehydrated alcohol and deionized water rinsing successively, dries at calorstat
Dry, obtain modifying super hydrophobicity polytetrafluoroethylene fibre.
2. polytetrafluoroethylene fibre method for modifying super hydrophobicity as claimed in claim 1, it is characterised in that step
Fiber prerinse described in one is processed as: first by polytetrafluoroethylene fibre in acetone soln and ethanol solution
Soak 2-3 hour, be then transferred to ultrasonic waves for cleaning 30-40 minute in deionized water, finally in calorstat
Dry 8-12 hour under the conditions of 50-60 DEG C.
3. polytetrafluoroethylene fibre method for modifying super hydrophobicity as claimed in claim 1, it is characterised in that step
Calorstat described in one is dried temperature and is 50-60 DEG C, and drying time is 6-10 hour.
4. polytetrafluoroethylene fibre method for modifying super hydrophobicity as claimed in claim 1, it is characterised in that step
Calorstat drying time described in three is 4-8 hour, dries temperature and is 50-60 DEG C.
5. polytetrafluoroethylene fibre method for modifying super hydrophobicity as claimed in claim 1, it is characterised in that step
Initiator described in five is the one in benzoyl peroxide, dilauroyl peroxide, azodiisobutyronitrile；
Described stabilizer is polyoxyethylene sorbitan monoleate and toluene.
6. polytetrafluoroethylene fibre method for modifying super hydrophobicity as claimed in claim 1, it is characterised in that step
Alkyl methacrylate described in six is butyl methacrylate (BMA) or methacrylic acid 12
Ester (LMA).
7. polytetrafluoroethylene fibre method for modifying super hydrophobicity as claimed in claim 1, it is characterised in that step 7
Described in washing time be 3-4 time, calorstat temperature is 50-60 DEG C, and drying time is 10-12 hour.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823470A (en) * | 2017-01-12 | 2017-06-13 | 华东理工大学 | A kind of compound coalescence material for water de-oiling |
| CN108328696A (en) * | 2017-01-20 | 2018-07-27 | 宝山钢铁股份有限公司 | A kind of preparation method of the compound coalescence material of modified Teflon for metallurgical emulsifying liquid waste water de-oiling |
| CN109251448A (en) * | 2018-08-27 | 2019-01-22 | 安徽江杰实业有限公司 | A kind of teflon valve sealing material preparation method |
| CN110935415A (en) * | 2019-12-10 | 2020-03-31 | 华东理工大学 | Modified polytetrafluoroethylene composite coalescence filler for oil-water mixed liquid separation |
| CN111778716A (en) * | 2020-06-04 | 2020-10-16 | 锐润(上海)信息技术服务中心 | Method for synergistically enhancing lipophilicity of polytetrafluoroethylene fiber by hydrophobic graphene oxide/carbon nano tube |
| US20220062854A1 (en) * | 2020-08-25 | 2022-03-03 | The Industry & Academic Cooperation In Chungnam National University (Iac) | Oil absorbent, method for manufacturing the same, and method for removing oil from aqueous phase using the same |
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| CN109251448A (en) * | 2018-08-27 | 2019-01-22 | 安徽江杰实业有限公司 | A kind of teflon valve sealing material preparation method |
| CN110935415A (en) * | 2019-12-10 | 2020-03-31 | 华东理工大学 | Modified polytetrafluoroethylene composite coalescence filler for oil-water mixed liquid separation |
| CN110935415B (en) * | 2019-12-10 | 2021-10-15 | 华东理工大学 | Modified polytetrafluoroethylene composite coalescence filler for oil-water mixed liquid separation |
| CN111778716A (en) * | 2020-06-04 | 2020-10-16 | 锐润(上海)信息技术服务中心 | Method for synergistically enhancing lipophilicity of polytetrafluoroethylene fiber by hydrophobic graphene oxide/carbon nano tube |
| CN111778716B (en) * | 2020-06-04 | 2022-10-11 | 上海灿越化工科技有限公司 | Method for synergistically enhancing lipophilicity of polytetrafluoroethylene fiber by using hydrophobic graphene oxide/carbon nano tube |
| US20220062854A1 (en) * | 2020-08-25 | 2022-03-03 | The Industry & Academic Cooperation In Chungnam National University (Iac) | Oil absorbent, method for manufacturing the same, and method for removing oil from aqueous phase using the same |
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